Wood lace bobbins, the staple of the lace pillow.
Standard Midlands styles average 4 1/8 inches in length and 1/4 inch diameter or thicker.
Woods may include African Blackwood, Ebony, Kingwood, Maple, Mesquite, Mopane, Morado and sometimes others. The key is that the wood must be medium to fine grained, or there will likely be pits that will catch threads. You can always email to see what is on hand.
Bucks, or travel sized bobbins, may be made from most of these turned bobbins. Some may have to be simplified a bit to fit the reduced length.
And yes, they are drilled for a spangling wire. The drill hole is not large enough to hide the knot; I do not encourage putting the knot in the bobbin because that will wear the bone as the spangle swings, and can cause the tail to break.
Please note that the price of these bobbins will be going up at the end of the year.